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Straight Razor: a Blade Forged from 75-Point Carbon Steel and Hollow Ground (Holford, 1907)
English
Frederick J. Holford · Public domain
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5. novembre 2026NO
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Straight Razor: a Blade Forged from 75-Point Carbon Steel and Hollow Ground (Holford, 1907)

A straight razor forged by hand. Frederick Holford's 20th Century Toolsmith (1907) takes steel 3/16 by 7/16 inch of about 0.75 % carbon, fullers the shank for the finger hold, bends the blade a little edgewise and then forges, hammers and hardens it the way he makes butcher knives, drawing the temper to purple. The razor is hollow ground after tempering, by an expert, without drawing the temper; made so, he says, it "will hold a very keen edge, which will equal any razor manufactured". He gives no blade length and does not describe the scales or the pivot; those are unknown here. Source: F. J. Holford, The 20th Century Toolsmith and Steelworker (1907), p. 176 (razor), pp. 80-82 (butcher knives, for forging and hardening), p. 21 (the hardening bath). Picture: his Fig. 106.
Avanzato
A day

Istruzioni

1

Read Holford

"To make an ordinary razor use steel 3-16 by 7-16 of about 75 points carbon."
2

Fuller the shank and shape

Fuller the shank in a little for the finger hold and forge it to shape, then form the blade by bending the steel a little edgewise (Fig. 106). The blade length is not given (unknown).

Materiali per questo passaggio:

Barra piatta di acciaio per utensiliBarra piatta di acciaio per utensili1 bar, 3/16 x 7/16 in

Strumenti necessari:

ForgiaForgia
IncudineIncudine
Martello da fabbroMartello da fabbro
Fuller (ferro da scanalare)Fuller (ferro da scanalare)
Tenaglie da fabbroTenaglie da fabbro
Dimensioni sconosciuteDimensioni sconosciute
3

Draw the edge and pack the steel

As for a butcher knife: at a deep red heat draw the edge thin, hammering evenly from both sides on the inside of the bend, until the bend has come out and the blade is straight. Then at a very low heat hammer equally on both flat sides of the edge to refine and pack the steel; heat again to the same low heat and hammer the centre of the blade, both sides evenly, its full length. Cool and file the edges straight.

Strumenti necessari:

ForgiaForgia
IncudineIncudine
Martello da fabbroMartello da fabbro
Lima per metalliLima per metalli
4

Harden

Make the fire long so more of the blade heats at once. Put the blade in edge down and move it back and forth for an even heat along its length, just hot enough to harden. Plunge it lengthwise, edge down, into the hardening bath (Holford p. 21: clean water, best made a brine with as much salt as it will dissolve, large and cold) and cool entirely.

Strumenti necessari:

ForgiaForgia
Tenaglie da fabbroTenaglie da fabbro
Salamoia saturaSalamoia satura
Guanti resistenti al caloreGuanti resistenti al calore
5

Temper to purple

Brighten one side. Hold the blade flat about 2 inches above the fire, bright side up, never on the coals, and heat it very slowly, moving it back and forth for an even temper, until the bright side shows purple.

Strumenti necessari:

Tela smeriglioTela smeriglio
ForgiaForgia
6

Hollow grind and hone

Hollow grind the blade after tempering, taking care never to draw the temper while grinding; Holford says this should be done by an expert. Then hone the edge.

Strumenti necessari:

Mola ad acquaMola ad acqua
Pietra per affilarePietra per affilare
7

Scales

A straight razor folds into a pair of scales on a pivot through the hole in the shank (Fig. 106). Holford does not describe the scales or the pivot; their material and making are unknown here.

Materiali per questo passaggio:

Materiale sconosciutoMateriale sconosciuto1 scales and pivot
8

History and honest limits

Holford's razor uses the same steel as his butcher knives and harnessmaker's knife, about 0.75 % carbon, but a harder temper: purple instead of the knives' blue. Blade length, scales and pivot are not given; a flat tool steel bar stands for the 3/16 by 7/16 inch bar of 0.75 % carbon steel.

Materiali

2

Strumenti richiesti

12

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